SZS series gas-fired (oil-fired) hot water boiler

Product thermal capacity: 7-116 MW

Working pressure: 1.0-1.6 Mpa

Available fuel: Nature gas, coke oven gas, blast furnace gas, carbon black off-gas, biogas, methanol, LPG, diesel, heavy oil, light oil, crude oil, etc.

Available industries: Heat supplying, hospital, colleges and universities.

 

 

 

Introduction

SZS series boiler is designed with longitudinal double drums and ” D ” type chamber structure. The furnace is on the right and convection tube bank is on the left. The body is fixed on the basement by middle and both end flexible supports and make the boiler expand horizontally sideways. Around the furnace is membrane wall. Furnace and tube bundle are totally separated by the membrane wall at the left side of the furnace. The back part of convection tube bank is sparse shift structure, front part is aligned structure. Smoke from furnace outlet enters re-burning chamber, convection tube bank area, and then from left front part enters spiral fin coil economizer and condenser, and finally is discharged to atmosphere through chimney.

Technical advantages

 

Digitized manufacture

Boiler body uses the forced circulation in the high temperature area to make sure all heating areas can be cooled down and avoid vaporization; The explosion door and flame detector are equipped for safe and reliable operation. Comb plates are used between both sides of boiler and tube bundle to avoid leakage of condensate and gas caused by using refractory concrete as sealing material. Air proof test is done before delivery in the factory to guarantee any gas leakage problem.

Environment-friendly

Big combustion chamber equipped with Low emission combustion burner effectively reduce the NOx to 30mg/m3. Smoke duct and smoke outlet use internal insulation to reduce operating noise.

Combustion chamber uses full membrane water cooling wall structure and pressurized combustion without smoke mixture.

Energy-saving

Good quality alumina silicate fiber and fire clay insulation material are used and the boiler body temperature is controlled below 45℃ and greatly heat loss is reduced. Combustion chamber is designed with narrow distance tube membrane water cooling wall which has good air proof to reduce heat lost and increase boiler thermal efficiency. Internal inspection holes uses high-alumina refractory and manhole cover seal devices, solving superheat problem in this part caused by using refractory bricks.

Convenience

Manholes are placed on the front and back side of drums and inspection doors on back side of boiler easy to open for inspection and clean inner and outer parts.

Longer working life

Membrane structure are used in the front and back wall for boiler body and highly increased their lifespan to over 20 years.

The key processes including material cutting, rolling, drilling are done by advanced CNC machining process to reduce the assembly stress and extend boiler service lifetime.

Flutter prevention fastener is used for high temperature part convection tubes, which avoid convection tube cracking problem.

Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will be tested by radiographic inspection.

 

 

SZL series coal-fired steam boiler


Product thermal capacity: 4-35 t/h

Working pressure: 1.0-2.5 MPA

Outlet temperature: 184-350 ℃

Available fuel: Bituminous coal, lean coal, anthracite

Available industries: Heating, chemical, food, tobacco, textile, print and dyeing, feed, medicine, building materials, wine, hospital

 

 

Introduction

SZL series vertical dual drums chain grate water tube steam and hot water boiler, adopts quick fitting and assembly structure. The 4-6t/h boiler is of quick fitting tube structure, exit shop after completely assembled, the boiler of 6-35t/h is composed of 2 main components. The upper assembled component is the boiler proper heat absorbing part, and the lower assembled component is of combustion equipment. The former part of the boiler proper is arranged a membrane wall, the upper part of it is connected to boiler cylinder, and its lower part is connected to collective chest, so as to form a combustion room and absorb the radiated heat from the furnace. Its rear part is arranged with dense convection tubes between upper and lower boiler cylinders. The high temperature smog after combustion shall stand for twice returning flushing transversely to the heat accepting surfaces, and shall be introduced to coal saver singly arranged, and flow into duster and exhausted from chimney in the end.

Technical advantages

 

CNC manufacturing technology

The key processing technologies such as steel plate blanking, circling, drum and tube plate drilling adopt advanced CNC machining to reduce the assembly stress and prolong the service life of the boiler.

Steel tube cutting, thread tube pressing and convection tube processing all adopt advanced CNC technology.

Automatic production line.

Advanced welding process

The welding of important parts like the vertical and circular seams of the boiler, the tubes, the inside of boiler and the flange are all adopted automated welding processes such as submerged arc welding or gas shielded welding to ensure the welding quality. All the vertical and circular seams will be done 100% radiographic inspection.

Tube flange weld adopts robot welding.

The chain grate panel, front and rear smoke chamber panel adopts CNC plasma cutting machine to cut orderly and beautifully.

Precise parts processing

Advanced manufacturing technology, using assembly line automatic spinning manufacturing.

Enhance heat transfer and raise boiler thermal efficiency.

Threaded smoke tubes are highly efficient heat transfer elements which is from many years research of our company. After continuous optimization, the heat transfer coefficient is 1.8 times higher than normal smoke tubes.

Unique structural design

According to different capacity, different numbers of independent air bins are arranged from front to back of the grate.

The user can reasonably adjust the air distribution according to different combustion conditions to ensure that the fuel is fully burnt.

Secondary air is input to disturb fuel gas in the furnace, to ensure the fuel is burnt totally. The independent secondary fan makes it easy to control and adjust the air volume and air pressure.

Feeds evenly feeding and avoid flashback.

 

SZL series coal-fired hot water boiler


Product thermal capacity: 2.8-29 MW

Working pressure: 1.0-1.25 MPA

Outlet temperature: 95/70℃, 115/70℃

Available fuel: Bituminous coal, lean coal, anthracite

Available industries: Heating, hotels, schools, hospitals

 

 

 

 

Introduction

SZL series vertical dual drums chain grate water tube hot water boiler, adopts quick fitting and assembly structure. The 4-6t/h boiler is of quick fitting tube structure, exit shop after completely assembled, the boiler of 6-35t/h is composed of 2 main components. The upper assembled component is the boiler proper heat absorbing part, and the lower assembled component is of combustion equipment. The former part of the boiler proper is arranged a membrane wall, the upper part of it is connected to boiler cylinder, and its lower part is connected to collective chest, so as to form a combustion room and absorb the radiated heat from the furnace. Its rear part is arranged with dense convection tubes between upper and lower boiler cylinders. The high temperature smog after combustion shall stand for twice returning flushing transversely to the heat accepting surfaces, and shall be introduced to coal saver singly arranged, and flow into duster and exhausted from chimney in the end.

Technical advantages

 

CNC manufacturing technology

The key processing technologies such as steel plate blanking, circling, drum and tube plate drilling adopt advanced CNC machining to reduce the assembly stress and prolong the service life of the boiler.

Steel tube cutting, thread tube pressing and convection tube processing all adopt advanced CNC technology.

Automatic production line.

Advanced welding process

The welding of important parts like the vertical and circular seams of the boiler, the tubes, the inside of boiler and the flange are all adopted automated welding processes such as submerged arc welding or gas shielded welding to ensure the welding quality. All the vertical and circular seams will be done 100% radiographic inspection.

Tube flange weld adopts robot welding.

The chain grate panel, front and rear smoke chamber panel adopts CNC plasma cutting machine to cut orderly and beautifully.

Unique structural design

According to different capacity, different numbers of independent air bins are arranged from front to back of the grate.

The user can reasonably adjust the air distribution according to different combustion conditions to ensure that the fuel is fully burnt.

Secondary air is input to disturb fuel gas in the furnace, to ensure the fuel is burnt totally. The independent secondary fan makes it easy to control and adjust the air volume and air pressure.

Feeds evenly feeding and avoid flashback.

Low NOx emissions

Graded air supply and special furnace arch structure decrease the NOx emissions to 100mg/m³.

Different biomass raw materials are analyzed by numerical simulations, thermal efficiency is more than 90%.

 

SHX coal-fired CFB (circulating fluidized bed) steam boiler

Product thermal capacity: 10 – 75 t/h

Working pressure: 1.25-2.45MPA

Outlet temperature: 194-485 ℃

Available fuel: Bituminous coal, anthracite, meagre coal, lignite, gangue, waste, sludge

 

 
 
 
 

Available industries: Chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital

As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the NOx emission is much lower than that of pulverized coal furnace, only 200ppm. CFBC can desulfurize directly during the combustion process, and the desulfurization efficiency is high. The technology and equipment are simple and economic, and the costs of its initial investment and operation are much lower than those of dry pulverized coal furnace and flue gas desulfurization (PC+FCD). The discharged ash residue has good activity and is easy to be comprehensive utilized without secondary ash residue pollution. The load adjustment range is large, and the low load can be reduced to about 30% of the full load.

Technical advantages

  • High temperature cyclone separator
  • High efficiency, wear resistance, separation efficiency ≥ 98%, effectively improve the combustion efficiency of the boiler thermal efficiency.
  • Large furnace design
  • Large furnace, low velocity design; the application of wearproof tube technology, reducing erosive abrasion.
  • Extend the residence time of coal particles in the furnace so that the coal can be fully burned.
  • Bell jar type hood
  • Adopt bell type hood to distribute air averagely and avoid fuel reverse to wind chamber.
  • Low bed pressure operation
  • By particle optimization, the operating bed pressure can be decreased to 3500Pa, which effectively saves operating costs and greatly reduces the oxynitride generated.

SHX coal-fired CFB (circulating fluidized bed) hot water boiler

Product thermal capacity:  7 – 91MW

Working pressure:  1.25-2.5MPA

Available fuel: Bituminous coal, anthracite, meagre coal, lignite, gangue, waste, sludge

Available industries: Chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital

 

 

 

Introduction

As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the NOx emission is much lower than that of pulverized coal furnace, only 200ppm. CFBC can desulfurize directly during the combustion process, and the desulfurization efficiency is high. The technology and equipment are simple and economic, and the costs of its initial investment and operation are much lower than those of dry pulverized coal furnace and flue gas desulfurization (PC+FCD). The discharged ash residue has good activity and is easy to be comprehensive utilized without secondary ash residue pollution. The load adjustment range is large, and the low load can be reduced to about 30% of the full load.

Technical advantages

  1. High temperature cyclone separator
  2. High efficiency, wear resistance, separation efficiency ≥ 98%, effectively improve the combustion efficiency of the boiler thermal efficiency.
  3. Large furnace design
  4. Large furnace, low velocity design; the application of wearproof tube technology, reducing erosive abrasion.
  5. Extend the residence time of coal particles in the furnace so that the coal can be fully burned. Bell jar type hood
  6. Adopt bell type hood to distribute air averagely and avoid fuel reverse to wind chamber.
  7. Low bed pressure operation
  8. By particle optimization, the operating bed pressure can be decreased to 3500Pa, which effectively saves operating costs and greatly reduces the oxynitride generated.

 

DZL series coal-fired steam boiler


Product thermal capacity: 2 – 20t/h

Working pressure: 1.0-2.5 MPA

Outlet temperature: 170-225℃

Available fuel: Bituminous coal,lean coal,anthracite

Available industries: Heating, chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital

Introduction

 

DZL series package boilers are horizontal three-pass water & fire tube boilers with a chain grate stoker structure. Threaded pyrotechnic tubes are arranged in the drum to form a convection heating surface, while the drum and the water walls on both sides form a radiation heating surface in the furnace. Each package system is fully installed and wired before being transported to site and is electrically controlled to provide functions such as stepless speed regulation for the stoker, threshold parameter alert and interlock protection.

Technical advantages

 

CNC manufacturing technology

The key processing technologies such as steel plate blanking, circling, drum and tube plate drilling adopt advanced CNC machining to reduce the assembly stress and prolong the service life of the boiler.

Steel tube cutting, thread tube pressing and convection tube processing all adopt advanced CNC technology.

Arched tube sheets and threaded fire tube was first adopted in China to increase heat transfer and completely solve the problem of cracking of the back tube sheet.

Chain grate plate and back smoke chamber plate is cut by CNC plasma cutting machine, which looks neat and beautiful.

Advanced welding process

The vertical and circumferential seam welding of the boiler adopts advanced automatic submerged arc welding technology to ensure the welding quality. All vertical and circumferential welds will go through 100% ray detection.

The welding of smoke tube and the tube plate adopts pre-expansion to eliminate the gap between the tube and tube plate, then be welded by automatic argon arc welding, which effectively eliminate stress and prolong boiler life.

The flange of the socket is welded by robots.

The chain grate is manufactured by our factory, and it is tested for 72 hours before leaving the factory to ensure that the tightness is moderate and won’t deviate.

Precision parts processing

Advanced manufacturing technology, using assembly line automatic spinning manufacturing.

Enhance heat transfer and raise boiler thermal efficiency.

Threaded smoke tubes are highly efficient heat transfer elements which is from many years research of our company. After continuous optimization, the heat transfer coefficient is 1.8 times higher than normal smoke tubes.

Unique structural design

Disturbed flue gas to ensure complete combustion of volatile matters.

The air volume takes about 30% of the total amount, and the wind speed is 50m³.

The independent secondary fan makes it easy to control and adjust the wind volume and pressure.

The high-temperature smoke generated by the combustion first enters the horoscope flue on both sides of the body from the tail (in this case, the boiler is water tube type), and the flue gas flows outside the tube.

The flue gas cooled by the horoscope flue enters the threaded tube (in this case the boiler is fire tube type) arranged in the drum from the front smoke chamber.

The flue gas will be exhausted from the back smoke chamber, this design fundamentally solves the problem of cracking of the tube sheet of a simple fire tube boiler.

Auxiliaries

Feeder: Feeding fuel equally to avoid flashback.

Gearbox: Designing reasonable rotating speed according to the combustion speed to make sure the fuel burning completely.

Cover plates: Cold-rolled pressed plates, strong and elegant.

Inspection door: reasonable manhole and hand hole layout, easy for maintenance. Inspection doors in furnaces for easy access and maintenance.

 

DZL series coal-fired hot water boiler


Product thermal capacity: 1.4-14 MW

Working pressure: 0.7-1.25 MPA

Outlet temperature: 115/70, 95/70℃

Available fuel: Bituminous Coal,Lean Coal,Anthracite

Available industries: Heating, Hotels, Schools, Hospitals
Introduction

 

 

 

DZL series package boilers are horizontal three-pass water & fire tube boilers with a chain grate stoker structure. Threaded pyrotechnic tubes are arranged in the drum to form a convection heating surface, while the drum and the water walls on both sides form a radiation heating surface in the furnace. Each package system is fully installed and wired before being transported to site and is electrically controlled to provide functions such as stepless speed regulation for the stoker, threshold parameter alert and interlock protection.

Technical advantages

 

CNC manufacturing technology

The key processing technologies such as steel plate blanking, circling, drum and tube plate drilling adopt advanced CNC machining to reduce the assembly stress and prolong the service life of the boiler.

Steel tube cutting, thread tube pressing and convection tube processing all adopt advanced CNC technology.

Arched tube sheets and threaded fire tube was first adopted in China to increase heat transfer and completely solve the problem of cracking of the back tube sheet.

Chain grate plate and back smoke chamber plate is cut by CNC plasma cutting machine, which looks neat and beautiful.

Advanced welding process

The vertical and circumferential seam welding of the boiler adopts advanced automatic submerged arc welding technology to ensure the welding quality. All vertical and circumferential welds will go through 100% ray detection.

The welding of smoke tube and the tube plate adopts pre-expansion to eliminate the gap between the tube and tube plate, then be welded by automatic argon arc welding, which effectively eliminate stress and prolong boiler life.

The flange of the socket is welded by robots.

The chain grate is manufactured by our factory, and it is tested for 72 hours before leaving the factory to ensure that the tightness is moderate and won’t deviate.

Precision parts processing

Advanced manufacturing technology, using assembly line automatic spinning manufacturing.

Enhance heat transfer and raise boiler thermal efficiency.

Threaded smoke tubes are highly efficient heat transfer elements which is from many years research of our company. After continuous optimization, the heat transfer coefficient is 1.8 times higher than normal smoke tubes.

Unique structural design

Disturbed flue gas to ensure complete combustion of volatile matters.

The air volume takes about 30% of the total amount, and the wind speed is 50m³.

The independent secondary fan makes it easy to control and adjust the wind volume and pressure.

The high-temperature smoke generated by the combustion first enters the horoscope flue on both sides of the body from the tail (in this case, the boiler is water tube type), and the flue gas flows outside the tube.

The flue gas cooled by the horoscope flue enters the threaded tube (in this case the boiler is fire tube type) arranged in the drum from the front smoke chamber.

The flue gas will be exhausted from the back smoke chamber, this design fundamentally solves the problem of cracking of the tube sheet of a simple fire tube boiler.

Auxiliaries

Feeder: Feeding fuel equally to avoid flashback.

 

Gearbox: Designing reasonable rotating speed according to the combustion speed to make sure the fuel burning completely.

Cover plates: Cold-rolled pressed plates, strong and elegant.

Inspection door: reasonable manhole and hand hole layout, easy for maintenance. Inspection doors in furnaces for easy access and maintenance.

 

DHX coal-fired CFB (circulating fluidized bed) steam boiler

DHX coal-fired CFB (circulating fluidized bed) steam boiler

Product thermal capacity: 35-75 t/h

Working pressure: 1.25-5.3 MPA

Outlet temperature: 194-485 ℃

Available fuel: Bituminous coal, anthracite, meagre coal, lignite, gangue, waste, sludge

Available industries: Chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital

 

 

 

 

Introduction

As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the NOx emission is much lower than that of pulverized coal furnace, only 200ppm. CFBC can desulfurize directly during the combustion process, and the desulfurization efficiency is high. The technology and equipment are simple and economic, and the costs of its initial investment and operation are much lower than those of dry pulverized coal furnace and flue gas desulfurization (PC+FCD). The discharged ash residue has good activity and is easy to be comprehensive utilized without secondary ash residue pollution. The load adjustment range is large, and the low load can be reduced to about 30% of the full load.

Technical advantages

High temperature cyclone separator

High efficiency, wear resistance, separation efficiency ≥ 98%, effectively improve the combustion efficiency of the boiler thermal efficiency.

Large furnace design

Large furnace, low velocity design; the application of wearproof tube technology, reducing erosive abrasion.

Extend the residence time of coal particles in the furnace so that the coal can be fully burned.

Bell jar type hood

Adopt bell type hood to distribute air averagely and avoid fuel reverse to wind chamber.

Low bed pressure operation

By particle optimization, the operating bed pressure can be decreased to 3500Pa, which effectively saves operating costs and greatly reduces the oxynitride generated.

 

 

DHX coal-fired CFB (circulating fluidized bed) hot water boiler


Product thermal capacity: 58-116 MW

Working pressure: 1.25-1.6 MPA

Outlet temperature: 90/70℃, 150/130℃

Available fuel: Coal, gangue, biomass, waste, sludge

Available industries: Centralized heating

 

 

 

 

 

Introduction

As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the helium oxide emission is much lower than that of pulverized coal furnace, only 200ppm. CFBC can desulfurize directly during the combustion process, and the desulfurization efficiency is high. The technology and equipment are simple and economic, and the costs of its initial investment and operation are much lower than those of dry pulverized coal furnace and flue gas desulfurization (PC+FCD). The discharged ash residue has good activity and is easy to be comprehensive utilized without secondary ash residue pollution. The load adjustment range is large, and the low load can be reduced to about 30% of the full load.

Technical advantages

High temperature cyclone separatorHigh efficiency, wear resistance, separation efficiency ≥ 98%, effectively improve the combustion efficiency of the boiler thermal efficiency.

Large furnace design

Large furnace, low velocity design; the application of wearproof tube technology, reducing erosive abrasion;Extend the residence time of coal particles in the furnace so that the coal can be fully burned.

Bell jar type hood

Adopt bell type hood to distribute air averagely and avoid fuel reverse to wind chamber.

Low bed pressure operation

By particle optimization, the operating bed pressure can be decreased to 3500 Pa, which effectively saves operating costs and greatly reduces the oxynitride generated.